package com.zqs.grainmall.cart.vo;

import lombok.Data;

import java.math.BigDecimal;
import java.util.List;

/**
 * @program: grain-mall
 * @description:  整个购物车，需要计算的属性，必须重写他的get方法，保证每次获取属性都会进行计算
 * @author: Mr.Zhang
 * @create: 2020-11-18 17:25
 **/

public class Cart {
    List<CartItem> items;

    private Integer countNum; //商品数量

    private Integer countType; //商品类型的数量

    private BigDecimal totalAmount; //商品总价

    private BigDecimal reduce=new BigDecimal("0"); //减免价格

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count=0;
        if(items!=null&&items.size()>0)
        {
            for (CartItem item : items) {
                count+=item.getCount();
            }
        }
        return count;
    }


    public Integer getCountType() {
        int count=0;
        if(items!=null&&items.size()>0)
        {
            for (CartItem item : items) {
                count+=1;
            }
        }
        return count;
    }


    public BigDecimal getTotalAmount() {
        BigDecimal amount=new BigDecimal("0");
        //1.计算购物项总价
        if(items!=null&&items.size()>0)
        {
            for (CartItem item : items) {
                if (item.getCheck()) {
                    BigDecimal totalPrice = item.getTotalPrice();
                    amount = amount.add(totalPrice);
                }
            }
        }
        //2.减去优惠总价
        //amount-reduce
        BigDecimal subtract = amount.subtract(getReduce());
        return subtract;
    }

    public void setTotalAmount(BigDecimal totalAmount) {
        this.totalAmount = totalAmount;
    }

    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
